These muffins are fool proof! This really is the Jordan Marsh Store recipe that they served in their bakery. Sometimes, my store made special batches with strawberries instead of blueberries. Those were always my favorite... All ingredients should be at room temperature. This recipe is a breeze to cut in 1/2. To keep them from sticking, I make them in white paper cup cake holders and wipe the top of the muffin tin with canola oil. Oh, and if you make a half batch from a pound of berries, try my recipe #348144 with the leftover berries... Enjoy!